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이온프로브를 이용한 가솔린엔진의 화염전파측정에 관한 연구
한봉훈(B.H.Han),김우태(W.T.Kim),박심수(S.S.Park),이현순(H.S.Lee) 한국자동차공학회 1992 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The in-cylinder combustion phenomena of internal combustion engine have been the subject of many researches. However, a number of early studies were carried out by using the combustion pressure measurement or the visualization of flame propagation with modifications of engine hardware or rig equipments and thus their applications to engine development process were rather I imi ted. In order to investicate the<br/> flame propagation of the gasoline engine wi thout any modi fications of<br/> <br/> engine hardware, the ion probes are installed at cylinder head.<br/> <br/> The<br/> <br/> measurement technique is based upon the ion current detecting method. The applicability of the ion probe sensor is confirmed with a-engine<br/> at different engine operating parameters.<br/> The test results indicate that the ion probe sensor provides enough information of mean flame propagation speed and flame behaviors in the<br/> combustion chamber.<br/>
이황복(H.B.LEE),이석재(S.J.LEE),한봉훈(B.H.HAN),윤금중(K.J.YOON) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
In HMC, researches on the hydrogen fueled engine have been carried out to evaluate the feasibility of hydrogen fuel as an alternative automotive fuel. For these studies. a DOHC engine was designed to supply gaseous hydrogen directly into the combustion chamber by use of hydrogen injector. The hydrogen injector was actuated by peak and hold type current signal (13A/8A). Tests have been performed to obtain the characteristics of performance and exhaust emissions. Compared with the gasoline engine. hydrogen engine produces higher NOx emission and the MBT ignition timing is limited in the vicinity of firing TDC due to the fast burning of hydrogen. Its performances are also influenced by injection timing considerably. As for catalyst test, the NOx conversion efficiency of hydrogen engine emission shows the similar trend to that of gasoline engine emission.<br/>
배기다기관이 부착되어 있는 촉매에 대한 비정상유동해석에 관한 연구
이정헌(J.H.Lee),한봉훈(B.H.Han),박심수(S.S.Park) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A three dimensional unsteady state flow field in a close coupled catalyst with exhaust manifold was studied numerically with STAR-CD code, a finite volume based 3-D turbulent flow code. The effect of exhaust manifold geometry on transient flow pattern was examined in order to understand the flow distribution in the catalytic converter.<br/>